\begin{tikzpicture}
    \tkzDefPoints{0/0/B, 6/0/C}
    \tkzDefPointBy[rotation=center B angle  28](C)  \tkzGetPoint{a1}
    \tkzDefPointBy[rotation=center C angle -52](B)  \tkzGetPoint{a2}
    \tkzInterLL(B,a1)(C,a2)  \tkzGetPoint{A}

    \tkzDrawPolygon(A,B,C)
    \tkzLabelPoints[above](A)
    \tkzLabelPoints[below](B,C)
\end{tikzpicture}

